Tracing the start of COVID-19 in GA

At a time when COVID-19 appears to be receding in much of Georgia, it’s worth revisiting the start of the pandemic in early 2020. Emory virologist Anne Piantadosi and colleagues have a paper in Viral Evolution on the earliest SARS-CoV-2 genetic sequences detected in Georgia. Analyzing relationships between those virus sequences and samples from other states and countries can give us an idea about where the first COVID-19 infections in Georgia came from. We can draw Read more

Reddit as window into opioid withdrawal strategies

Drug abuse researchers are using the social media site Reddit as a window into the experiences of people living with opioid addiction. Abeed Sarker in Emory's Department of Biomedical Informatics has a paper in Clinical Toxicology focusing on the phenomenon of “precipitated withdrawal,” in collaboration with emergency medicine specialists from Penn, Rutgers and Mt Sinai. Precipitated withdrawal is a more intense form of withdrawal that can occur when someone who was using opioids starts medication-assisted treatment Read more

CROI: HIV cure report and ongoing research

The big news out of CROI (Conference on Retroviruses and Opportunistic Infections) was a report of a third person being cured of HIV infection, this time using umbilical cord blood for a hematopoetic stem cell transplant. Emory’s Carlos del Rio gave a nice overview of the achievement for NPR this morning. As del Rio explains, the field of HIV cure research took off over the last decade after Timothy Brown, known as “the Berlin patient,” Read more

endothelial progenitor cells

Stress of public speaking mobilizes progenitor cells from bone marrow

The stress of public speaking is enough to drive damage-repairing progenitor cells out of the bone marrow into the blood, a study of patients with heart disease has found.

Public speaking raises the blood pressure -- it also drives progenitor cells out of the bone marrow

Public speaking raises the blood pressure — it also drives progenitor cells out of the bone marrow

Endothelial progenitor cells (EPCs) are found in the bone marrow, and thought to repair damaged blood vessels once mobilized into the blood by injury or stress. Previous research has shown that strenuous exercise can lead to a dramatic increase in blood EPC levels, but the effects of psychological stress on EPCs had not been examined before.

This report emerges Magliette Calcio A Poco Prezzo from a large NHLBI-funded study of mental stress ischemia previously described in Emory Public Health magazine.

The new findings were presented Saturday, March 9 at the American College of Cardiology conference in San Francisco. The presenter was cardiovascular research fellow Ronnie Ramadan, MD. Senior authors are Arshed Quyyumi, MD, professor of medicine and director of the Emory Cardiovascular Research Institute, and Viola Vaccarino, MD, PhD, professor and chair of the Department of Epidemiology, Rollins School of Public Health.

In some patients with coronary artery disease, mental stress may precipitate ischemia– a deficiency in blood flow to the heart – a risk factor for adverse events and death independent of other cardiovascular risk factors such as smoking, cholesterol and diabetes.

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Posted on by Quinn Eastman in Heart Leave a comment